wp group email no paragraph breaks

the wp group email feature combines the message and the footer into one single paragraph, no line breaks. as this:

Did you get this? Are we GMO FREE yet? Sent by Chamber of Commons from the "GMO Free Valley" group: http://chamberofcommons.com/groups/gmo-free-valley/ --------------------- To unsubscribe from these emails please log in and go to: http://chamberofcommons.com/members/econet/settings/notifications/

What is the fix for this?